Update a blog's post count.
<?php update_posts_count( $deprecated ); ?>
This function does not return a value
WordPress MS stores a blog's post count as an option so as to avoid extraneous COUNTs when a blog's details are fetched with get_blog_details(). This function is called when posts are published to make sure the count stays current.
Since: MU
update_posts_count() is located in wp-includes/ms-functions.php